Research Article
Research Article
Parathlasia gen. nov. (Hemiptera, Cicadellidae, Ledrinae, Ledrini), a new leafhopper genus from Guizhou, China
expand article infoYu-Jian Li, Li-Na Jiang, Zi-Zhong Li§, Ji-Chun Xing§
‡ Qufu Normal University, Qufu, China
§ Guizhou University, Guiyang, China
Open Access


Parathlasia gen. nov., a new leafhopper genus and species of Ledrini, P. guizhouensis sp. nov., from Guizhou, China are described. Morphological differences between the new genus to other related Chinese genera are discussed. A key to distinguish Parathlasia from other similar genera is given.


Auchenorrhyncha, Homoptera, key, Midoria, morphology, new genus, new species, taxonomy, Thlasia, Yelahanka


The leafhopper subfamily Ledrinae is a rather special group with many prominent and unique features (Jones and Deitz 2009). It is a large group distributed worldwide with a preference for the tropics and subtropics, usually feeding on trees and shrubs. Of the four (Dietrich 2005) or five (Jones and Deitz 2009) recognized tribes the largest, Ledrini, comprises leafhoppers with a dorsum coarsely pitted or knobbed, lamellate or foliaceous anterolaterally with the head spatulate and face generally concave (Fig. 1A, B), forewings punctate with extra apical veins (Fig. 1D) or venation reticulate in the apical two-thirds. China is one of the main distribution areas of Ledrinae in the world (Li and Li 2008), with more than 160 species belonging to 23 genera. While sorting and identifying ongoing samples of ledrine leafhoppers from China, we found a new genus (with one new species) similar in appearance to Thlasia Germar but sharing similarities also with other Chinese genera, which are extensively described and illustrated below.

Figure 1. 

External morphology of Parathlasia guizhouensis sp. nov. A dorsal habitus B lateral habitus C ventral habitus D forewing E hindwing F hind tibia G apex of hind femora H apex of hind leg.

Material and methods

Terminology used in this study is mainly based on Dietrich (2005) and Jones and Deitz (2009). Dry specimens were used for preparing descriptions and illustrations. External morphology was observed under a stereoscopic microscope. Body length was measured with an ocular micrometer, in millimeters, from the apex of head to the apex of the forewing at rest. Genital segments were examined and macerated in 10% KOH solution, washed in water and transferred to glycerin. Illustrations were made by eye using a Leica MZ 12.5 stereomicroscope. Multiple photographs were taken with a Leica D-lux 3 digital camera. Final digital images were compiled into Adobe Photoshop for labeling and plate composition. Specimens studied are deposited at the School of Life Sciences, Qufu Normal University, Qufu, China (QFNU) and the Institute of Entomology, Guizhou University, Guiyang, China (GUGC).

Key to known genera of Ledrinae from China

1 Tibia of hindfoot flat, foliaceous 2
Tibia of hindfoot, not foliaceous 9
2 Pronotum usually prominent, humped-like; with lateral extensions 3
Pronotum often declivous or weakly prominent; without extensions but lateral area concave 4
3 Lateral edge of pronotum laminately subangularly dilated Eleazara Distant
Lateral edge of pronotum straight Complanledra Cai & He
4 Lateral area of pronotum with ear shaped protrusions or longitudinal ridges Ledra Fabricius
Lateral area of pronotum without ear shaped protrusions 5
5 Crown elongate, middle length of crown greater than width between eyes Ledropsis White
Crown not significantly elongated, middle length of crown less than width between eyes 6
6 Crown ridge present 7
Crown without or weak ridge Confucius Distant
7 Forewing without a developed, sclerotized tubercle at first split of M vein Paraconfucius Cai
Forewing with a developed, sclerotized tubercle at first split of M vein 8
8 Crown with 2 window-like patches; bend at end of style with a small protuberance Funkikonia Kato
Crown without window-like patch; bend at end of style without a small protuberance Kuohledra Cai & He
9 Forewing cells strongly depressed, forewing veins raised Dusuna Distant
Forewing cells not strongly depressed, forewing veins raised not significantly 10
10 Lateral edge of pronotum protrude in an angular shape 11
Lateral edge of pronotum not protrude in an angular shape 14
11 Pronotal lateral extensions broad, with margins subtriangular 12
Pronotal lateral extensions broad, with margins rounded Thlasia Germar
12 Body large, length longer than 19 mm; style with long fine setae on inner edge Macrotrichia Zhang, Sun & Dai
Body medium, length longer usually 10–15 mm; style without long fine setae on inner edge 13
13 Lateral extensions of pronotum broad and well developed Tituria Stål
Lateral extensions of pronotum narrow and not well developed Neotituria Kato
14 Body small, length 6–9 mm 15
Body moderate, longer than 9 mm 18
15 Center of crown with a longitudinal groove Petalocephaloides Kato
Center of crown with a longitudinally ridged or flat 16
16 Center of crown flat; base of forewing A veins not raised 17
Center of crown with a longitudinally ridged; base of forewing A veins prominent Parapetalocephala Kato
17 Aedeagus longitudinally flat or slender, with ventral process 23
Aedeagus slender, without ventral process Arenoledra Kuoh
18 Body stout; style with an odontoid process on the outside of the bend near end 19
Body slender; style without odontoid process on the outside near end 20
19 Forewing terminal venation reticulate; aedeagus slender Destinoides Cai & He
Forewing terminal venation not reticulate; aedeagus longitudinally flattened Destinia Nast
20 Crown wider than the front of pronotum; pygofer posterior margin concave Laticorona Cai
Crown narrower than pronotum; pygofer posterior margin not concave 21
21 Crown broadly rounded; aedeagus slender, terminal with 2 pairs of processes Pachyledra Schumacher
Crown parabolic; aedeagus without process or with 1 pair of processes 22
22 Forewing A1 vein prominent Platycephala Kuoh
Forewing A1 vein not prominent Petalocephala Stål
23 Aedeagus with paired ventral processes Midoria Kato
Aedeagus with single ventral process Parathlasia gen. nov.


Parathlasia Li, Jiang, Li & Xing, gen. nov.

Figures 1, 2, 3

Type species

Parathlasia guizhouensis Li, Jiang, Li & Xing, sp. nov.


Medium-sized, 7.5–8.0 mm long (including tegmen); yellowish to sordid brown. Head (Fig. 1A, B) with crown declivous, in dorsal view nearly twice as long and five times wider than eye; median carina complete but weakly elevated, weakly concave either side of midline, with some granular protuberances; ocelli (Fig. 1A) submarginal and close to posterior margin, closer to midline than corresponding eyes. Face (Fig. 1C) including eyes shorter than wide; frontoclypeus flattened. Pronotum slightly wider than head with anterior margin slightly convex, lateral margins oblique, slightly divergent posteriorly. Metanotum (Fig. 1A) two-thirds length of pronotum with distinct transverse depression. Forewing (Fig. 1A, B, D) with apical margin strongly oblique, three subapical cells, inner subapical open, middle subapical closed, extra apical cells present; appendix very narrow. Hind leg as in Fig. 1F, H.

Male pygofer (Fig. 2A, E) with long ventrocaudal process; with some small stout setae subapically. Xth segment very short. Subgenital plates (Fig. 2A, H) fused basally, elongate, inner margin with short spine-like setae. Aedeagus (Fig. 2B, C, F, I) with shaft somewhat elongate, tubular, curved dorsally with a ventral medial process, gonopore apical on ventral surface; basal apodeme distinct. Style (Fig. 2C, D, F, I) elongate, apophysis curved ventrally, apex truncate. Connective (Fig. 2C, F, I) T-shaped.

Figure 2. 

Male genitalia of Parathlasia guizhouensis sp. nov. A genital capsule, lateral view B aedeagus, lateral view C aedeagus, connective and style, ventral view D right style, lateral view E pygofer, lateral view F aedeagus, connective and style, lateral view G apex of abdomen, ventral view H subgenital plate I aedeagus, connective and style, ventral view.

Female unknown.


China (Guizhou) (Fig. 3).

Figure 3. 

Distribution of Parathlasia guizhouensis sp. nov.


The name of the new genus refers to the similarity of the genus to Thlasia Germar externally.


The new genus is similar in appearance to Thlasia Germar, Midoria Kato and Yelahanka Viraktamath, Webb & Yeshwanth in its relatively small size with a short head and with similar extra apical forewing veins but lacking accessory cross veins. In addition, the oblique forewing apex in Parathlasia is also found in some species of Yelahanka (see Viraktamath et al. 2021) and long ventrocaudal pygofer process is found also in some species of Thlasia (see Zhang et al. 2004). It differs from these and other Ledrinae in having the aedeagus with a single ventral medial process (Fig. 2B, F); Midoria has paired ventral processes on the aedeagus (Li and Li 2010, 2011).

The new genus also appears closely related to Parapetalocephala Kato. The main difference between Parathlasia and Parapetalocephala are the forewing veins which in the later genus are prominent (see Jones and Deitz 2009).

Parathlasia guizhouensis Li, Jiang, Li & Xing, sp. nov.

Figures 1, 2, 3


Head (Fig. 1A) yellowish brown, base of crown with some darker brown marking, ocelli reddish brown. Thorax sordid brown; forewings (Fig. 1A, B, C, D) yellowish hyaline apically margined with brown.

Crown flat, more or less horizontal, surface punctate with median short ridge on posterior margin, about 0.4 times as long as wide between eyes. Ocelli not prominent, closer to each other than to adjacent eye. Pronotum shallowly foveate on either side of median line in anterior half, posterior half slightly gibbous, anterior margin slightly convex, posterior margin medially concave, lateral margin somewhat straight, about 1.85 times as long medially as crown. Mesonotum shorter than pronotum. Forewing claval region densely punctate, apical margin obliquely truncate.

Pygofer anterior margin deeply bilobed, posterior margin slightly sinuate, in lateral view about 1.2 times as long as height, ventro-cauadal process long, extending beyond dorsal pygofer margin, with some conical protrusions at end of ventral margin. Subgenital plate widest in mid-region tapering both anteriorly and posteriorly, apex acutely angled. Style broad in middle region, tapering forward and backward, apophysis curved ventrally with axe shaped apex. Aedeagal shaft (Fig. 2B, C, F, I) bifurcate apically; ventral processes elongate, curved dorsally, longer than shaft. Other male genitalia characteristics as in Figs 1 and 2.

The characteristics of female are unknown.


Length (including tegmen): ♂, 7.5–8.0 mm.

Type material

Holotype : ♂, China: Guizhou, Fanjingshan, Huguosi, 29 May 2002, coll. Li Zizhong (QFNU). Paratypes: 6♂♂, same data as holotype; 2♂♂, same data as holotype except 29 July 2001, coll. Yang Maofa (GUGC); 1♂, China: Guizhou, Leigonghan, Lianhuaping, 2 June 2005, coll. Li Zizhong and Zhang Bin (GUGC) (see Fig. 3 for geographic distributions of new species).

Host plant



The species name is derived from the type locality.


We thank Mr M. D. Webb (Natural History Museum, London, UK) for suggestions to earlier manuscript and improve thoughtfully. We thank Dr J. Adilson Pinedo-Escatel (University of Illinois at Urbana-Champaign Champaign, USA) and an anonymous reviewer for reading the manuscript and making some suggestions. This project is supported by the Young Talents Invitation Program of Shandong Provincial Colleges and Universities (Grant No. 20190601).


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  • Viraktamath CA, Webb MD, Yeshwanth HM (2021) Leafhopper subfamily Ledrinae of the Indian subcontinent: 1, Description of Yelahanka gen. nov. (Hemiptera: Cicadellidae) with seven new species and new combinations. Zootaxa 4915(4): 451–480.
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